http://blogs.msdn.com/ericgu/archive/2008/10/13/versioning-in-healthvault.aspxDownload the sample code from MSDN Code Gallery. [Note that EncounterOld has been renamed to EncounterV1 in newer versions of the SDK] “Versioning” is an interesting feature of the HealthVault platform that allows us to evolve our data types (aka “thingen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/ericgu/archive/2008/10/13/versioning-in-healthvault.aspx#9001171Thu, 16 Oct 2008 01:59:21 GMT91d46819-8472-40ad-a661-2c78acb4018c:9001171HealthVault<p>HealthVault has a feature known as &quot;versioning&quot;. Here's a description of what it is and how it works</p> http://blogs.msdn.com/ericgu/archive/2008/10/13/versioning-in-healthvault.aspx#9001645Thu, 16 Oct 2008 12:43:31 GMT91d46819-8472-40ad-a661-2c78acb4018c:9001645Rajesh<p>The names of the versioned item types on application config center needs to be modified so it can be distinguished easily. &nbsp;</p> <p>Currently, there are 2 &quot;Family History&quot;, 2 &quot;Medication&quot; types etc and it is very difficult to figure out which one refers to old and which one is new.</p> <p>-Raj</p>